Apraxia and Dyspraxia
Apraxia is the inability to execute a voluntary motor movement despite being able to demonstrate normal muscle function. Apraxia is not related to a lack of understanding or to any kind of physical paralysis but is caused by a problem in the cortex of the brain. This could happen, for example, after a stroke or as a consequence of a brain tumor. An example would be the inability to grasp a cup of tea and transport it to one’s lips. Apraxia of speech is a severe speech disorder characterized by inability to speak, or a severe struggle to speak clearly. Apraxia of speech occurs when the oral- motor muscles do not or cannot obey commands from the brain, or when the brain cannot reliably send those commands. Partial disabilities in these areas are called dyspraxia and dyspraxia of speech.